The most abundant voluntary muscles in human body are:
Correct answer: B. Skeletal
- A. Cardiac
- B. Skeletal
- C. Smooth
- D. Smooth & Cardiac
Explanation
Skeletal muscle is the only voluntary muscle and makes up roughly 40 percent of body mass, attached to bones by tendons. Cardiac and smooth muscle are both involuntary, so the options naming them fail on the word voluntary before abundance is even considered.
This question appeared on the UHS MDCAT 2026 paper, which you can sit online with every answer explained.
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About Muscles
Muscles covers skeletal, smooth and cardiac muscle, their microscopic structure and the roles of tendons, myofibrils, actin and myosin. It explains the sliding filament mechanism, sarcomere shortening, neuromuscular transmission and calcium regulation, while distinguishing voluntary skeletal movement from involuntary contraction in smooth and cardiac muscle.
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